frequency demodulator 中文意思是什麼

frequency demodulator 解釋
頻率調
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • demodulator : 反調器
  1. Furthermore, in order to supplement multi - object tt & c capability of new generation space tt & c system, gmsk modulation is recommended by ccsds because of its preferable frequency speciality and miscode performance. the thesis analyzed characteristic and demodulation realized of gmsk signal. attempting to design a universal multi - mode demodulator of bpsk, qpsk and gmsk, the thesis studied

    本文分析了gmsk信號的特點及解調實現，試圖設計一種bpsk 、 qpsk 、 gmsk通用的多模式解調器，因而研究了調制識別技術，分析了以決策論為基礎的三種信號的調制識別方法，並提出了基於人工神經網路的調制識別方法。
  2. In the paper, prescale technology, interpolate method, averaging method and multiple period synchronization method are used to measure the frequency accurately. diode demodulating technology, and power attenuated method or probe coupling & water load technology are employed to measure the power of high power microwave. isothermal technology is used to improve the stability of demodulator and to expend the range of square linear region

    本文採用預分頻法、內插法、多周期同步法、平均法實現了頻率的精確測量;利用二極體檢波技術，結合衰減法或探針耦合+水負載技術實現了大功率微波功率的測量;採用恆溫技術提高了二極體檢波器穩定度;完成了單片機串口通信協議設計和系統電磁兼容的分析和設計。
  3. In this part the signal from the infrared sensor was amplified by common collector amplifier, and the demodulator was built by filter. in which the signal got demodulated. because we just need the frequency of the signal, filter may achieved

    通過信號通路，傳感器生成的調幅波信號轉變為與脈搏頻率相同的方波。先由運算放大器接共集電極電路完成信號放大，通過濾波得到脈搏信號的頻率，從而用濾波器電路完成了解調功能。
  4. Phase modulation system is a superior system, can transmit data at high rate. in this thesis, digital fh - mpsk and fh - / 4dqpsk modulator and demodulator are given according to the frequency - hop communication characteristics. at last, we implement these systems in both hardware and software platform

    本文根據跳頻傳輸的特點，對mpsk和4 - dqpsk這兩種相位調制方式進行分析，提出數字調制解調方案，並用matlab對其進行了模擬，最後還在ti公司的tms320c6416晶元上實現了這兩種系統。
  5. The utilization of high speed dsp can highly increase the performance of anti - interference and anti - detection. the modulation mode, data rate and coding mode can be controlled by configuring the registers of modulator stel - 1109. the viewport and nco frequency control word selection can be accomplished by configuring the demodulator stel - 2105

    Dsp通過i / o讀寫操作，控制調制晶元stel - 1109的讀寫寄存器，用來設置晶元的調制方式、數據速率、編碼方式等；而dsp對解調晶元stel - 2105讀寫寄存器的控制，則對解調的一系列視窗選擇及nco頻率控制字進行了設置。
  6. 2. as for the intermediate frequency part in integrated circuits ( ic ' s ), we introduce feedback automatic gain control ( agc ) loop in view of its fargoing dynamic range and convenient precision adjustment, hence stable power of fore - demodulator signal and maximum systematic gain are ensured

    2 、中頻部分採用集成電路的反饋式自動增益放大環路，動態控制范圍大，控制精度調節簡便，是系統增益的最大來源，同時也保證了中頻解調器前信號的功率穩定。
  7. The frequency offset estimation algorithms for gmsk signal are also discussed and a frequency offset estimator with larger estimation range and higher accuracy is proposed. two kinds of synchronization structures are compared with each other. at last, the synchronizer described above and a differentially coherent demodulator compose a blind gmsk receiver

    其次，基於對目前gmsk信號盲載頻偏差估計方法的分析和比較，根據第五章提出的頻差估計思想，提出一種寬估計范圍、高精度的gmsk信號頻差估計方法。
  8. Frequency modulator demodulator trainer

    頻率調制調解學習套件
  9. Design and implementation of a holding frequency - hopping receiver ' s if amplifier and demodulator

    手持式跳頻電臺接收機中放的設計與實現
  10. A full - digital demodulation technique is introduced in this paper, which can make it easy and quick to design and achieve binary phase shift keying ( bpsk ) demodulator, and also can reduce the requirement of the oscillator frequency precision and the degree of stability of the receiver

    本文介紹了一種適合於用數字信號處理器（ dsp ）實現的全數字解調技術。該技術能方便、靈活地設計實現二進制相移鍵控（ bpsk ）解調器，而且使用該技術可以大大降低對接收機本身的振蕩頻率精度和穩定度的要求。
  11. The system is consisted of tuner, cofdm ( coded orthogonal frequency division multiplexing ) demodulator and usb2. 0 controller

    整個系統由調諧器， cofdm解調部分， usb2 . 0控制器三大部分組成。
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